Discussion We found systematic differences between the test and retest session for three of the four motion parameters in the horizontal plane and in two of the four motion parameters in the frontal plane with one further parameter showing borderline significant differences between the two sessions.
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Reliability and measurement error of frontal and horizontal 3D spinal motion parameters in 219 patients with chronic low back pain.
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The sentences
Participants with unstable pain showed a trend towards lower ICC (1,1) coefficients and higher LOA scores between the sessions for the frontal plane movements, whereas the horizontal plane movements showed mixed results – with ICC (1,1) coefficients being slightly lower for ROM, mean velocity and jerk index and higher for Phase-plot area.